The Chameleon Arc from Merrell features a Lycraneoprene and mesh upper that goes on easily. Anchored by protective leather ribs elastic lacing self adjusts for a continuously close fit. Merrell In-Broad EVA footframe keeps the foot centered and the look low and sleek. Multi-dimensional tread on Vibram Chameleon Arc sole wraps up into a protective sidewall. NubuckSuede leather upper.